Power converter
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsGhislain Despesse, Benjamin Pollet
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Abstract
A power converter including at least one piezoelectric element in a branch of a bridge of switches, the switches being controlled to alternate phases at substantially constant voltage and at substantially constant charge between the terminals of the piezoelectric element.
Claims20
A power converter comprising at least one piezoelectric element in a branch of a bridge of switches, the switches being controlled to alternate phases at substantially constant voltage and at substantially constant charge between the terminals of the piezoelectric element and the turning on of each switch being performed under an approximately zero voltage between its terminals, to obtain a power balance from the point of view of the piezoelectric element over a resonance period.
A method of controlling the converter of any of the foregoing claims, comprising, within periods of resonance of the piezoelectric element, an alternation of phases when at least two switches are on and of phases when all switches are off.
Dependencies are inferred from the claim text.